[Nhcoll-l] [ Ext GC ] Re: Vitrine Seam Failure

[Heidi Mead]

I want to thank you all for your input, suggestions, and additional questions.
I have reached out to our vendor, reviewed our invoices, and everything I know about the cases follows below;

All vitrines were purchased between the years 2004-2015 as display units, meaning each vitrine came associated with its own custom mounting deck and pedestal.
All were purchased from the same vendor in batches over different years. During that time frame, the vendor used different manufacturers. (Assuming that the manufacturers are vetted by the vendor, the materials, methods and specifications for the pedestals and decks should be consistent.) I know....assumptions.
Vitrines from multiple purchase years have failed.
The invoices we have on file do not list the specifics of the decks, pedestals, or the vitrines themselves, only the dimensions.
The vendor indicated that suggestions for repair would have to come from a source other than the original manufacturer, and that they would forward the information when received.

Thank you again everyone, I truly appreciate your time.
Heidi

From: Rebecca Newberry <rebeccanewberry at yahoo.com>
Sent: Friday, October 21, 2022 5:16 PM
To: Heidi Mead <heidi.mead at gcsu.edu>; Peter A Rauch <peterar at berkeley.edu>
Cc: nhcoll-l at mailman.yale.edu
Subject: [ Ext GC ] Re: [Nhcoll-l] Vitrine Seam Failure

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You may also want to check the case interiors for wooden decks or plinths that swell in high humidity. We have had case decks swell and crack acrylic seams.
Best,
Rebecca Newberry
Science Museum of Minnesota

On Friday, October 21, 2022 at 03:22:09 PM CDT, Peter A Rauch <peterar at berkeley.edu<mailto:peterar at berkeley.edu>> wrote:


Heidi,
Distinguishing between those which failed and those which haven't (yet), it might help to know...:

Are they of recent or old manufacture?
One supplier/manufacturer, or several?
Large, or small?
Settled on perfectly plane (not necessarily level) stands, bases, tables, floors, ...?
Peter R.

On Fri, Oct 21, 2022 at 10:05 AM Heidi Mead <heidi.mead at gcsu.edu<mailto:heidi.mead at gcsu.edu>> wrote:

Good morning all,



I am wondering if any of you might have some insight into why our expensive vitrines might have suddenly popped open at the seams.

Our housekeeping methods for cleaning cases only involves a very lightly dampened cloth (distilled water). There is no crazing.

12 out of our 20 vitrines are exhibiting gaping at the sides, top, base, or all seams. There does not appear to be any one pattern. All cases are in the same room, some along walls, some centrally located. We do use a data logger and I am hoping that will provide some clues, but I would truly appreciate any thoughts any of you might have.



Thank you for whatever help you might have for us.

Heidi

Heidi F. Mead

FOSSIL PREPARATION

WILLIAM P. WALL MUSEUM OF NATURAL HISTORY

BIOLOGICAL & ENVIRONMENTAL SCIENCES

GEORGIA COLLEGE

102 Herty Hall

478-445-2395

Heidi.mead at gcsu.edu<mailto:Heidi.mead at gcsu.edu>

She/Her/Hers
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